flexures

noun

1. 1

   The act of bending or flexing; flexion.

2. 2

   A turn; a bend; a fold; a curve.

3. 3

   A curve or bend in a tubular organ.

4. 4

   The last joint, or bend, of the wing of a bird.

5. 5

   The small distortion of an astronomical instrument caused by the weight of its parts; the amount to be added or subtracted from the observed readings of the instrument to correct them for this distortion.